Sam answers Dario with safety cases, Fable cracks a 370-year-old cipher, T3 Code unlinks threads from PRs, Astra still cheats at chess

Day two of the pacing debate belonged to Sam Altman, who published OpenAI's answer to Dario overnight: explicit safety cases before frontier RL runs , no waiting for an antitrust exemption, "pacing does not mean stopping", plus a second post naming the two failure modes he wants to avoid, losing control to AI and too much concentration of power. The replies want to know who grades the safety cases. Roon predicted open source will be banned after a major disaster and got 500 replies, Bryan Cantrill confessed a 1990s virus prank to argue that extinction fear is the real contagion, and LLMJunky rediscovered Bernie Sanders' bill with 20-year pris